:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel2: #273349;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #2563eb;
  --accent2: #059669;
  --danger: #dc2626;
  --border: #334155;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.login-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 380px;
}
.login-box h1 { font-size: 20px; margin: 0 0 4px; }
.login-box p.sub { color: var(--muted); margin: 0 0 24px; font-size: 14px; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; margin-top: 14px; }
input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  font-size: 15px;
}
button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
}
button.primary { background: var(--accent); color: white; }
button.secondary { background: var(--panel2); color: var(--text); border: 1px solid var(--border); }
.error { color: var(--danger); font-size: 13px; margin-top: 12px; min-height: 18px; }
.hidden { display: none !important; }

header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
header.topbar h1 { font-size: 17px; margin: 0; }
main { padding: 20px; max-width: 1400px; margin: 0 auto; }

@media (max-width: 600px) {
  header.topbar { flex-wrap: wrap; gap: 8px; padding: 12px 14px; }
  header.topbar h1 { font-size: 15px; }
  header.topbar #userLabel { font-size: 11px; }
  header.topbar button { padding: 8px 10px; font-size: 13px; }
  main { padding: 12px; }
  .toolbar .month-label { min-width: auto; flex: 1; }
  .personal-row { flex-wrap: wrap; }
  .personal-row input { min-width: 100px; }
}

.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar .month-label { font-size: 16px; font-weight: 600; min-width: 160px; text-align: center; }

.grid-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
table.plan { border-collapse: collapse; width: 100%; font-size: 13px; }
table.plan th, table.plan td { border: 1px solid var(--border); padding: 4px 6px; text-align: center; white-space: nowrap; }
table.plan th { background: var(--panel2); position: sticky; top: 0; }
table.plan td.name, table.plan th.name { position: sticky; left: 0; background: var(--panel2); text-align: left; z-index: 2; min-width: 140px; }
table.plan td.cell select {
  width: 58px;
  text-align: center;
  text-align-last: center;
  padding: 4px 1px;
  font-size: 12px;
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
}
.weekend { background: rgba(37,99,235,0.12); }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-top: 20px; }
.panel h2 { font-size: 15px; margin: 0 0 12px; }
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tabs button.active { background: var(--accent); color: white; }
.tabs button { background: var(--panel2); color: var(--muted); }

.personal-row { display: flex; gap: 8px; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--border); }
.personal-row input { flex: 1; }
.personal-row button { padding: 6px 10px; font-size: 13px; }

.legend { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; font-size: 12px; color: var(--muted); }
.legend span { display: flex; align-items: center; gap: 4px; }
.legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.toast { position: fixed; bottom: 20px; right: 20px; background: var(--panel2); border: 1px solid var(--border); padding: 10px 16px; border-radius: 8px; font-size: 13px; max-width: 320px; }
.toast.err { border-color: var(--danger); color: #fecaca; }